I have two recently unlocked (given subsidy code by T-Mobile, thanks to advice from this forum) V600's which will be going with me on a trip to China. I plan to buy SIM cards and time cards at the Beijing airport, since my business will be in Beijing and Tianjin. I am so pleased to now have this option. These phones have their US charging units and I am wondering how to charge the batteries safely in China. I have travel voltage converters, but they all warn not to use with 'electronic or digital' equipment-only heat producing things like hair dryers and coffee pots.
How should I safely charge the phone battery and not fry the phone? Any advice is greatly appreciated.

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